Weed-burner.



P. G. DAVIDSON.

WERD BURNER. f APPLICATION FILED MAB. 30, 1909.

947,297. Patented .15.11.25, 1910.

UNITED srkrns PATENT onirica.

TR GODTFRED DAVIDSON, OF VALLEY CITY, NORTH DAKOTA, ASSIGNOR OFONE- HALF TO HANS C. STENSHOEL, OF VALLEY CITY, NORTH DAKOTA.

wann-BURNER.

Specification of Letters Patent. 1331391211391] Jan. 25, 1910.v

Application filed March 30, 1909. Serial No. 486,747.

To all whom it may concern:

Be it known that I, PETER Gr. DAVIDSON, a citizen of the United States, residing at Valley City, in the county of Barnesand State of North Dakota, have invented certain new and useful Improvements in Weed- Burners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to burning devices for destroying weeds, such as wild oats, on farm land; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure l is a plan view of the weed destroyer with portions of the burner supports broken away and certain of the burners omitted. Fig. 2 is a side view with one of the ground wheels removed. Fig. 3 is a detail side view of one of the burners, drawn to a larger scale. Fig. 4 is an end View of the burner.

A are the ground wheels mounted on an axle B, and C are the shafts or draft attachments which are connected to the said axle.

D is a framework of bars secured to the axle and shafts.

E is a seat for the driver supported from the framework in any convenient position; and F is a tank for gasolene also supported by the framework.

G are arms having their end portions arranged at an obtuse angle with each other, and provided at their middle parts with bearings fr] which are journaled on the axle B. The ront end portions of the arms have slots c, and are arranged substantially horizontal, and the rear end portions of the arms areA inclined downwardly.

H is a crank-shaft journaled in bearings h on the framework D, and provided with cranks i at its ends, the crank- )ins of which engage with the slots e, and a ord a means for varying the inclination of the rear-end portions of the arms G.

I is a lever secured to the shaft H near the drivers seat, and provided with a catch. j for engaging with a notched quadrant-plate J secured to the framework.

K is a tubular support journaled in bearings f: secured to the rear ends of the arms Gr.

L is a lever secured on the support K, and

m is a rod pivoted to the lever L, and protothe 'tubular support by clamps n. Thek pipes K and N are made of any desired length, and portions only of them are shown.

O are the burners which are connected by short branch pipeso to the T-pipes n., These burners are all alike, and as many as ldesired are used, and they are arranged at any desired distances apart.

TheA burner pipe N is arranged t0 the rear of the tubular support, and can be clamped to it inany desired position. The burners are arranged a little above the tubular support, so that their nozzles 79 whence the fiame issues project forwardly over the tubular support, and are directed more or less downward by turning the tubular support on its axis. The height of the burners above the ground is varied by means-of the lever I vand arms G. These adjustments' can be made as the machine is being drawn along.v f

Each burner has a regulating valve s at it-s rear, and has holes s in its periphery for the admission of air to mix with the gas i which is ignited as it issues from the nozzle. A cup S is arranged under each burner. This cup is filled withV gasolene which is ignited to heat the burner and vaporize the gasolene in it before the machine is started'.

T is a flexible pipe which connects the tank F with the burner pipe; This :pipe may be of'india rubber, or it may be a metallic pipe suitably jointed. The pipe T is provided vwith a valve tof any approved construction, andthe rod t for working the 'valve is arranged with its handlel portion in convenient proximity to the drivers seat.

Thegasolene tank is preferably provided witha small air-pump and a pressure-gage of approved construction, and the gasolene is forced into the burner pipe by thepres-7 sure of the air previously forced into the gasolene tank by rthe kair-pump.

The"machine is drawn, through or over the weeds, land the flames from the burners are `caused to impinge on the weeds,l so that they are 'destroyed in aneffectual manner.

What I claim isi l. In a Weed burner, the' Combination, with a frame provided with an axle and ground Wheels mounted thereon, and a draft-attachment arranged at the front end of the frame; of arms pivoted on the said aXle, means for adjusting the said arms With respect to the ground, a horizontal support journaled in bearings on the said arms and arranged to the rear of the said `ground wheels, a fuel supply pipe secured to the said support, burners secured to the said pipe With their flame nozzles projecting forwardly, and means for turning the said support on its axis to adjust the direction of the flames.

2. In a Weed burner, the combination, With an axle, and ground Wheels mounted thereon, of a frame carried by the said axle, arms pivoted on the said axle and provided with Vslots in their front end portions, a crankat the rear ends of the said arms, adjusting devices for turning the said support in its bearings, a burner pipe clamped on the rear side of the said support, burners secured to the burner pipe With their iame nozzles projecting over the said support, and means for supplying; gasolene to the said burner pipe.

In testimony whereof I have aiiixed my signature in the presence of tWo Witnesses.

PETER GODTFREI) DAVIDSON. Witnesses:

WALTER Goor, GEO. FITZGERALD. 

